Jackmanii Superba Clematis

The same purple clematis flowers as the original Jackmanii Clematis
only they are slightly larger and more rounded. Pinch off the spent
flowers before they set seed to make this Clematis bloom repeatedly.

Jackmanii
Superba is a heavy blooming, vigorous clematis vine which will grow
quickly to 12 feet. It should be pruned hard (to 12 inches) in early
spring.